Duplicating engraving machine



April '2-8, 1953 s. c. BARONE DUPLICATING ENGRAVINGMACHINE Filed Feb.110 1950 2 SHEETS-SHEET l INVENTOR. SAUL C. BARONE A TTORNEYS Ap 28,1953 s. C. BARONE DUPLICATING ENGRAVING MACHINE Filed Feb. 10, 1950Ill/4 m n bb\ INVEN TOR. SAUL C. BARONE A T TORNEYS Patented Apr. 28,1953 DUPLICATING ENGRAVING MACHINE Saul o. Barone, Petaluina, Calif.

Application February 10, 1950 Serial No. 143,579 2 l Myinvention relatesto a duplicating engraving machine.

- A primary object of. my invention is to provide a' machine tofacilitate duplicating or copying steel engravings and the like. v Afurther object of the invention is to provide a machine of theabove-mentioned character which is highly simplified, compact, sturdyand light weight in construction.

A further object is to provide a duplicating en giraving machineincluding novel means for regulating. the depth of cut of the engravingtool.

A further object is to provide a machineof the above mentioned characterincluding a novel and highly simplified linkage between the tracing andengraving tools.

- A still further object of my invention is to provide a'machine of theabove-mentioned character including novel means which permit the tracingand engraving tools to be freely shifted in'any direction in ahorizontal plane, while preventing the tools from shifting axially ornormal to the work.

Other objects and advantages of my invention will be apparent during thecourse of the following description.

In the accompanying drawings forming a part of this application, and inwhich like numerals are employed to designate like parts throughout thesame:

. Figure 1 is a side elevational view of a duplieating machine embodyingmy invention;

Figure 2 is a plan view of the same;

i FigureB is an enlarged, fragmentary, vertical section taken on line3-3 of Figure 2;

Figure 4 is an enlarged, horizontal, fragmentary,'sectional View takenon line 4-4 of Figure3;

Figure 5 is aplan view of a ball bearing spacer plate;

Figure 6 is a transverse, vertical sectional view taken on line 65 ofFigure 1; and

Figure '7 is an enlarged, fragmentary, vertical sectional view taken online 'l--'i of Figure 1.

In the drawings, where, for the purpose of illustration, is shown apreferred embodiment of my invention, the numeral 15 designates ahorizontal support or base plate adapted to be fixedly secured to thetop of a work bench, table or any other suitable support.

Rigidly mounted upon oneend of the base plate I5 and projecting abovethe sameis a relatively stationary, inner, vertical cylindrical, sleeveit permanently rigidly secured to. the top. of,.the.

base plate by welding or the like. Thesleeve It.

2 Claims. (01. 90-121) includes, on internal, annular web or flange llhaving a central, axial bore I8 within which. is

fixedly and removably mounted an internally Axially slidably mountedupon the relatively stationary sleeve I6 is an outer, cylindrical tubeor sleeve screw-threaded bushing or bearing I9.

20 having its top end permanently rigidly secured by Welding'or the liketo the bottomof a flat, horizontal, rectangular plate 2| constitutingthe tracing table. A vertically disposed screw shaft 22- extends throughthesleeves l6 and 2E as-shown,

and has screw-threaded engagement within the bushing 19. 1 Thisscrewshaft 22 has a top, reduced, cylindrical extension 23 extendingrotatably through an opening 24 formed in the tracing table2l. A thrustwasher or hearing 25 may be arranged between the top end of the screwshaft 22 and the bottom face of the table 2|. The screw, shaft 22further includes a bottom, reduced extension-2 i extending rotatablythrough a small opening 2T in the base plate [5 and below the baseplate. A swivel handle 28 is carried by the bottom end of the extension26 and is used for turning the screw shaft 22 to shift the outer sleeve20 axially in either direction upon the inner sleeve It for raising andlowering the tracing table 2|.

The device further comprises an engraving table 29 which is in the formof a flat and rectangular plate spaced vertically above the tracingtable 2!, and disposed in superposed relation with respect thereto.Corner, tubular spacers 3U- maintain the tables 2i and 29 spaced apart,and elongated, vertical, screw-threaded rods 3! ex-'. tend through thespacers 30 and through openings in the corners of the tables 2| and 29.Nuts 32 are mounted upon the opposite endsof the rods 31 and secure thetables 2! and 29 together as a'rigid unit. The engraving table 29 isdisposed horizontally and parallel to the tracing table 2|. Bymanipulating the swivel handle 28, the tables 2! and 29 may be shiftedtogether vertically as a unit.

Rigidly mounted upon the top of the base plate It and spacedirom one endof the tables 21 and 29, as shown in Figure l, is a bearing assemblycomprising a pair of longitudinal, laterally spaced, upstanding channelmembers or mounting brackets 33 having their tops disposed at the sameelevation. Rigidly mounted upon the brackets 33 are elongated,horizontal channel bars 33' which extend beyond the left ends of thebrackets 33, remote from the tables 2i and 29; Rigidly mounted'upon thetops of the chan; nel bars .3 3 .,by any, suitablemeans is a, f at rectangular horizontal base plate 34. The base plate 34 is disposedsubstantially at the same elevation as the tracing table 2|. Rigidlysecured to the base plate 34 by welding or the like, and arrangedadjacent to the marginal edges thereof are longitudinally elongated,narrow, upstanding bumper strips or stops 35 for a purpose to bedescribed.

Mounted upon the topof thebaseplatea l and arranged inwardly ofthebumper strips35 thereof, is a thin, flat horizontal ball bearing 35including a spacer plate 31 which is fiat and circular, and is providedwith a plurality of circumferentially spaced openings. 38 countersunkupon both sides of the spacer plate 31,.as shown. Balls 39 are arrangedwithin the openings 38 of the spacer plate, and these balls projectabove and below the spacer plate 37, as shown. The balls 39 are freelyrotatable and roll upon the base plate 34. with a plurality ofcircumferentiall'y spaced, depending, thereto and being slidable uponthe'base plate 36. The pegs liJ'mainta-in the spacer plate 31' spacedfrom the base plate 34, but permit-the ball; bearing 35170 shift freelyover'the surface oi'the bearing plate 4|, as required; The spacer plate31 is disposed slightly below the tops of the bumper strips 35, and suchbumper stripswill engage the spacer plate 3'! to maintain the ballbearing 3% within the confines of the ba'seplate'as;

A fiat, rectangular bearing plate 4 I" which rests upon the balls 39-of' the ball bearing 36 so that it may be shifted horizontally in anydirection, may be of substantially the same size as thestationarybearing plate B l. The bottom of the plate AI is disposed at anelevation slightly above the bumper strips 35, so that the plate il maybe shifted horizontally beyond the bumper strips. A flat, circular,horizontal bearing plate 42 is arranged above the plate-4| and inspaced, superposed relation with respect-thereto. The plates 4| and 42are maintained spaced apart vertically and connected together as ahorizontally shiftable unit by spacer bolts 43 or the like. The diameterof the circular plate 42 is preferably substantially equal to the widthof the rectangular plate 4 A rigid, L-shaped bracket 44 is boltedor'otherwise rigidly secured to one of the channel membore 33, as shown,at a point slightly below the base plate 34. This bracket 44 projectsradially beyond the periphery of'the plate 42-; Figure-6', and

an upstanding, rigid post 45 is rigidly secured to the Outer end ofbracket 43 and extends above the plate 42, as shown. A horizontal,generally radially extending arm 46 is rigidly secured tothe top of thepost 45 and projects inwardly of the post and over the plate 42.Rigidly'secured to the inner end of the arm 48 is a vertical, dependingtube or sleeve 41 having a vertical bore slidably receiving therein avertical stem or shaft 48 of a ball bearing housing 49. A ball bearing58 similar to the ball bearing 38 is mounted within the bearing housing49, and this ball bearing engages upon the top of the horizontallyshiftable bearing plate 42. The ball bearing 59 is confined within thehousing 49 and the unit comprising the tables 4| and 42 is freelyhorizontally shiftable between the bearings 35 and 50. An expansiblecoil spring 5| surrounds the stem or shaft 48 between the housing 49 andsleeve #1, and this spring serves to urge the housing 49 and ballbearing 50 into constant contact with the plate 42. In this manner,the-plates 4 1 .and 4 2 are freely shit-table The spacer plate 31 isprovided short legs or pegs 40 rigidly secured.

horizontally, as previously stated, but they cannot be displacedvertically during their horizontal shifting movement.

A horizontally disposed, straight, elongated bar 52 is bolted, welded orotherwise rigidly secured to the top of the plate 4| and projects beyondboth sides of the plate 4|, as shown in Figure 1. One end of the bar 52projects over the tracing plateor table 2| and is spacedabovethe same,as shown. At itsend adjacentto. the table. 2|, the bar 52 is providedwith an integral sleeve or head 53 having a vertical bore 54. Theopposite end of the bar 52 likewise projects beyond the edge of thetableor plate 4| remote from the table 2|, Figure. 1, and. at such end thebar 52 is pivotally connected with a horizontally swingable, downwardlyinclined linkor connecting rod 55 having its lowermost end pivotallyconnected, as at 56. with an elongated, horizontal, fixed bar 51disposed adjacent to the forward edge of the bearing plate 3 2. andrigidly secured thereto by bolts or the like 58 which extend through thebar 5! and. through aperturedlugs 59 formed upon theadjacent edge ofthe. bearing: plate. 3.4.. Thebarilt is thus fixed and extendslongitudinally of the;

base plate is. An upstanding post 60 is rigidly mounted upon the topofthe bar 52 near theend: of the bar which is pivoted to the member 55.The top of this post fill extends slightly above. the elevation of thetop of the. engravingiplateor table 29, Figure 1 A straight, elongatedbar 5| is rigidly secured to the top end of; the. post: 60 and extendshorizontally and parallel tothe bar 52.. The inner end of the bar 6| isprovided with an integral sleeve or head 62 having a. vertical.

bore 63 arranged in alignment with the bore 54. The head 62 is disposedabove the engraving plate or table 29. An intermediate post or bar M isdisposed between the ends of the bar GI and the top end of the bar orpost 64' is rigidly secured to the bars I. The lower end of. the bar orpostli l is rigidly mounted upon a. horizontal, inverted. U-shapedbracket 65, in turn rigidly mounted. upon thev horizontally shiftableplate 42; It. is thus seen. that the bars 6| and 52 form a substantiallyrigid frame, together with the posts 60. and 64, and such frame; throughthe. bar 52 is rigidly connected with the tables or plates 4'! and 42vfor horizontal movement. with them. The. tables or plates and the frameare pivotally connected with the fixed bar 57.- through. the: pivotedlink 55. As. previouslystatedthe linlr 55.. is freely swingablehorizontally, and the. link serves to limit. the movement of the plates4| and 42; together with the. frame including the. bars: 52. and:

'Rigidly mounted within the bore 63 of thehead. 62 is a fixed sleeve 66slidably receiving therein a vertically reciprocatory sleeve or bearing61. The reciprocatory sleeve 57 has rigidly mounted within its bore apair of axially spaced bushings 68, and freely rotatably journaledwithin. the. bushings 68 is a. vertical spindle 69 having a groovedpulley l0 fixedly secured thereto adjacent to the top end of thereciprocatory sleeve 61, Figure 3. As shown in Figure 3, the sleeve 6'!projects above the top of the stationary sleeve 66. A substantiallyL-shaped motor mounting bracket '2'! is fixedly secured tothe top of thereciprocatory sleeve 67, and a suitable electric drive motor 12 isrigidly mounted upon the bracket H. The armature shaft of the motor 12is equipped with a pulley l3, and a belt 14 connects the pulleys 13' andHi for driving the spindle 69. Ahead or chuck 1 5i is secured to thebottom end of the spindle tejana this chuck'detachably' receivesasuitable engraving tool or bit 16 of the router type.

' Means-are provided to regulate the depth of cut of the engraving tool16. Such means comprises a vertically swingable yoke 11- includinglaterally spaced, parallel arms or rod 18 arranged upon opposite sidesof the sleeve 66, Therods T8 are connected at one end with a transverserock shaft or pin 19 rigidly secured to the rods. This rock shaft 19 haa spur gear 80 rigidly secured'thereto, and disposed within an extensionor boss 8! formed upon one side of the fixed bushing or sleeve 69. Thespur gear 80 engages gear: teeth 82 formed upon one side of thevertically recip rocatory sleeve 61. The opposite 'endsof the rods 18are connected bymeans of-a transverse plate 83, and the yoke 11 furtherincludes an integral, longitudinal extension or rod 84 rigidly securedto the plate 83 at the transverse center of the plate; The extension orrod 84 projects radially outwardly of the head 02, Figure 3v and carriesthe screw will not tend to become displaced after it is placed in aselected, adjusted position. It is thus seen thatby' manipulatin theadjusting screw 85 and thereby swinging the yoke 11 vertically, the gear80,-through coaction with'the gearteeth 82,"will cause the bushing 91 tobe adjusted vertically,-thereby regulating the depth of cut of theengraving tool or bit 10. A set screw 61' may be provided for lockingthe sleeve 6! in selected adjusted positions. A rough adjustment of thedepth of cut of the engraving tool may be obtained by manipulating thswivel handle 28, as'previously stated, but the fine adjustment of thedepth of cut-of the engraving tool is Obtained through the adjustingscrew 85 and associated elements.

Fixedly mounted within the bore 54 of the head 53 is bearing or sleeve89, and fixedly mounted within this sleeve 89 i a second tube or sleeve90. A shaft or rod 9| is slidably mounted within the bore of the sleeve90 for reciprocation, and this rod 9| is provided near its top end witha head or stop 92. The lower end of the rod 9| is provided with anintegral head or chuck 99 disposed below the bottom of the head 53 andhaving a diameter substantially larger than that of the rod 9|. Atracing tool or bit 94 i mounted within the chuck 93, and preferably hasa conically tapered point 95. An expansible coil spring 96 surrounds therod 9! between the chuck 93 and the bottom of the sleeve 90, and thisspring serves to urge the rod 9| downwardly vertically. A substantiallyhorizontal link or lever 9'! has its outer or free end engaging beneaththe stop 92 of the rod 9! for limiting the downward movement of the rod9|. This link 91 i pivotally mounted between its ends, as at 98, upon afixed arm or support 99 rigidly secured, as at I00, to the mountingbracket 65. The lever 91 includes an upstanding extension or arm l!having its top end extending above the bar 6|, Figure 1, where it ispivotally connected, as at I02, with the rear end of a lever or linkI03, in turn pivotally connected between its ends, a at I04, with ashort, upstanding post or bracket I rigidly seemed to theto'p' or thebarat; 'Ihe member" I03- has its/free end I06 engaging upon the top ofthe plate 83, Figure 3, and the arrangement is such thatthe verticaladjustment of the en} graving bit 16, by means of the adjusting screwHand-associatedelements, will alsocause vertical adjustment of thetracing bit 94. Thus;

when the yoke 11 is swung upwardly, Figure 3,

the sleeve BTwill be raised'for elevating the bit 16-. Simultaneously,the arm or lever I03 will beswung upwardly and the rear end of'this armat I02 will shift downwardly, swinging the free end of the lever 91upwardly about its pivot 98-, Figure l. This will cause the rod 9| andtracing tool 94-to be elevated; The spring 96 will maintain thehead 92'in frictional contact with the lever orarm- 91 at all times, so thatthere will be no lost motion or play in the linkage. The tools orbits 16and 94 are shifted through a slight distance only by means or theadjusting screw 85, and the major vertical adjustment is achieved bymanipulating the handle 28 and associated elements, as previouslystated.

In-u'se,- the steel engraving -or the like to be traced or duplicated issecured to the top of the tracing table 2|. A separate engraving platet0 have the engraving duplicated thereon is secured to the top of theengraving table'29. The handle 28 is now turn-ed for elevating'thetables 2| and 29 as a unit to approximately the proper eleva-- tion forthe engraving plates to contact the points of the tools or bits I6 and94. Further fine vertical adjustment may be achieved by the use of theadjusting screw 85. The motor 12 may now be started for rotating theengraving tool Orbit 18. The head 53 is now grasped by the hand and thetracing tool 94 is guided about or along the various lines of theengraving which is to be traced or duplicated. The plates or tablesAland 42, together with the bars 52 and 6|, will move freely horizontallyin any direction, depending upon the wish of the user. The extent ofmovement of the tracing tool 94 in the horizont l direction is limitedonly by the extent of travel of the pivoted link 55. As the tracing tool94 traverses the engraving upon the table 2|, the rotating engravingtool or router 16 will exactly duplicate the engraving upon the platewhich is secured to the engraving table 29.

The machine is light weight in construction and extremely easy tomanipulate. The arrangement of the ball bearings 36 and 50 renders themovement of the heads 53 and 62 substantially frictionless. Aspreviously stated, the spri pressed ball bearing 50' prevents anyvertical movement or play of the tables 4| and 42 while the heads 53 and62 are being shifted in the horizontal plane.

While I have shown and described the machine in connection with theduplication of steel engravings and the like, I do not wish to limit theinvention to this particular use, and it is obvious that the machine maybe employed for reproducing patterns in Wood panels, plastic sheets andthe like.

It is to be understood that the form of the invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in shape,- size and arrangement of parts may be resortedto without departing from the spirit of the invention or the scope ofthe subioined claims.

Having thus described the invention, I claim:

1. In a duplicating engraving machine, a support, horizontal tracing andengraving tables 7; mounted on said support, said tables; being insuperimposed and fixed relation, a. bearing as-v sembly mounted on said;support, in laterally,

spacedrelation; tgsaidtables, v .aidbearing assemly' mprising; a.horizontal, bearing plate an ranged tomove freely inalldirections-in ahorizontal plane relative to. said support and said tables,,a rigidframe fixed; onsaid bearing plate and movable therewith; a firsthorizontal bar:

engraving head on thefree end of said first bar-'- having:a-verticallymovable. engraving point, a;

tracing headon the free end of: saidsecond bar having a verticallymovable tracing point, means operatively connected between the engravingand tracing points and acting to condition vertical. movement of theengraving point in response to.

vertical movement of the tracing point, said-bearing assembly furthercomprising another relatively stationary bearing plate located beneath,

the first-mentioned bearing plate, a base plate spaced beneath andcarrying said other bearing plate, said base plate being mounted on saidsupport, aballbearing located in the space between. said base plate andsaid other bearingplate andsupporting said other bearing plate for freemove.- ment a horizontal plane relative tosaid base plate in alldirections.

2. Ina duplicating engraving machine, a sup-- port, horizontal tracingand engraving tables mounted on said support, said tables, being insuperimposed andfixed relation, a, hearing assembly mounted on saidsupport in laterally spaced relation to said tables, saidbearingassembly comprising a horizontal bearing plate arranged to move freelyin all directions in a hori-- zontal plane relative to said support andsaid tables, a rigid frame fixed on said bearing plate and movabletherewith, a first horizontal bar fixed on said frame and extendingtoward said tables, said first bar having a free, end overlying saidengraving table, a second horizontal bar fixing a free end overlyingsaid tracing table, an.

engraving head; on the free end of said first. bar

having a. vertically movable engraving point, a.

tracinghead, on the free end of said second bar having averticallymovable tracing-point, means.

operatively-connected between the engraving and tracing, points andacting tov condition. vertical. movement of the engraving point inresponse to...

verticalmovement of the tracing point, said bear! ing assembly furthercomprising another r6134: tivelystationary bearing plate located beneaththe. first-mentioned bearing plate, a base plate,

paced beneath. nd arrying aid, other bearing. plate, saidbase platebeing mounted on saidsupr port, a ball bearing-locatedin thespace betweesaid base plate and said other bearing plate and. supporting said otherbearing plate for free movement in a-horizontal plane relative to saidbase plate in all directions, and a bracket fixed on said support andhaving a ball bearing engaging thev upper side of the first-mentionedbearing plate and precluding upward movement thereof relar.

, tive to said support.

SAUL C. BARONE.

Number Name Date 82,430- Merrill Sept. 22, 1868- 384395 Moore- June 26,1888 387,595 Moore Aug. 7, 1888 426,408 Dodds Apr. 22, 1890- 429213Jacobson June 3, 1890 453,487 King June 2, 1891 885,428 Brierley Apr.21, 1908 1,551,648 Eaton Sept. 1, 1925 1,561,214 Bush Nov. 10, 19251,615,261 Edmunds Jan. 25, 1927 1,617,632 Gillespie Feb. 15, 19271,696,032 Glover Dec. 18, 1928 1 ,748,591 Uschmann Feb. 25, 19301,907,250 Shaver May 2, 1933 2,161,709 Henkes June 6, 1939 2,178,130Zwick Oct. 31, 1939

